Absolute positioning treats the whole physical page as the containing element, irrespective of the page margins. That means if we set the top and left CSS attributes to zero your HTML would be at the very top-left corner of the page.

As oppose to absolute positioning, fixed positioned elements adhere to the page margins (set using the CSS margin attribute in @page), using it as the container. That means setting the top and left CSS attributes to zero would show your HTML positioned at the very beginning of the page margins.